と思う、お医者

Im learning phrases like this in genki right now and I swear I’ve heard them pronounced with no spaces “toomou, oisha” but when I have a digital voice/translator say it I hear “to omou, o isha”. The first one also sounds more natural to me but I’m uncertain as I am still probably sub N5.

I wanted to ask for those who have heard this from natives or have native practice if they are more commonly pronounced as one or with that small space.

Thanks!